System and method for detecting, localizing, or classifying a disturbance using a waveguide sensor system
First Claim
1. A vibration detection and classification system, comprising:
- a waveguide in operative contact with a boundary;
at least one sensor for sensing vibrations operatively connected to the waveguide, the waveguide extending the range the sensor;
a control circuit operatively connected to the at least one sensor and adapted for detecting and classifying vibration;
wherein the control circuit is adapted to perform at least one function selected from the set comprising resolving both compressional waves and string waves, separating waves by direction, separating waves by speed, processing a long term average vibration signal and a short-term average vibration signal and determining when the short-term average signal exceeds a threshold, and providing a constant false alarm rate detector.
1 Assignment
0 Petitions
Accused Products
Abstract
A vibration detection and classification system and associated methods are disclosed. The system includes a waveguide in operative contact with a boundary, such as a security fence. At least one sensor for sensing vibrations such as acoustic waves is operatively connected to the waveguide, the waveguide extending the range of the sensor. At least one control circuit is operatively connected to the one or more sensors and is adapted for detecting and classifying vibrations. The method includes securing an area protected by a boundary by mechanically transmitting a vibration from a portion of the boundary to a waveguide, transmitting the vibration along the waveguide to a sensor, sensing the vibration at the sensor, determining at least one characteristic associated with the vibration, and using the at least one characteristic associated with the vibration to determine if the vibration is indicative of an intrusion.
156 Citations
46 Claims
-
1. A vibration detection and classification system, comprising:
-
a waveguide in operative contact with a boundary;
at least one sensor for sensing vibrations operatively connected to the waveguide, the waveguide extending the range the sensor;
a control circuit operatively connected to the at least one sensor and adapted for detecting and classifying vibration;
wherein the control circuit is adapted to perform at least one function selected from the set comprising resolving both compressional waves and string waves, separating waves by direction, separating waves by speed, processing a long term average vibration signal and a short-term average vibration signal and determining when the short-term average signal exceeds a threshold, and providing a constant false alarm rate detector. - View Dependent Claims (2, 3, 4, 5, 6, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34)
-
-
7. A vibration detection and classification system comprising:
-
a waveguide in operative contact with a boundary;
at least one sensor for sensing vibrations operatively connected to the waveguide;
the waveguide extending the range of the at least one sensor;
a control circuit operatively connected to the at least one sensor and adapted for detecting and classifying vibrations;
at least one thick arc-shaped band of metal for coupling the waveguide to the boundary.
-
-
35. A method of securing an area protected by a boundary, comprising:
-
mechanically transmitting a vibration from a portion of the boundary to a waveguide;
transmitting the vibration along the waveguide to a sensor;
sensing the vibration at the sensor; and
determining at least one characteristic associated with the vibration, at least one of the at least one characteristic selected from a set comprising an average RMS signal over a time period, a time delay associated with the vibration and a loudness;
using the at least one characteristic associated with the vibration to determine if the vibration is indicative of an intrusion. - View Dependent Claims (36, 37, 38, 39, 40)
-
-
41. A method of monitoring a fence, comprising:
-
attaching a vibration couplet between a tensioned wire and the fence;
mechanically transmitting a vibration from a portion of the fence to the tensioned wire;
transmitting the vibration along the tensioned wire to a first sensor located remotely from the vibration coupler;
sensing the vibration at the first sensor; and
determining if the vibration is indicative of a condition. - View Dependent Claims (42, 43, 44, 45)
-
-
46. A method of securing an area protected by a boundary, comprising:
-
mechanically transmitting a vibration from a portion of the boundary to a waveguide;
transmitting the vibration along the waveguide to a sensor;
sensing the vibration with a plurality of sensors within an array; and
determining at least one characteristic associated with the vibration selected from the set comprising an average RMS signal over a time period, a time delay associated with the vibration, and a loudness;
using the at least one characteristic associated with the vibration to determine if the vibration is indicative of an intrusion.
-
Specification